So Ireland is trying to attract roots travelers from Australia and New Zealand:
Go Green and Discover your Irish side
and Scotland is trying to attract roots travelers from Canada:
Tourism chiefs eye expat market at inaugural Scottish week in Toronto
I just finished reading Bloody Foreigners about the history of immigration in England -- and based on this emerging pattern of trying to attract folks back to their homelands for a visit and the information jammed into this book -- there are a lot of countries (Denmark, France, Jamaica, India, etc.) that should start trying to entice the English "home" for a holiday!